# # - Parallel::ForkManager - # This spec file was automatically generated by cpan2rpm [ver: 2.028] # The following arguments were used: # --keep-pipes Parallel::ForkManager 2>&1 # For more information on cpan2rpm please visit: http://perl.arix.com/ # %define pkgname Parallel-ForkManager %define filelist %{pkgname}-%{version}-filelist %define NVR %{pkgname}-%{version}-%{release} %define maketest 1 name: perl-Parallel-ForkManager summary: Parallel-ForkManager - A simple parallel processing fork manager version: 0.7.5 release: 1 vendor: dLux Szab Balzs packager: Arix International license: Artistic group: Applications/CPAN url: http://www.cpan.org buildroot: %{_tmppath}/%{name}-%{version}-%(id -u -n) buildarch: noarch prefix: %(echo %{_prefix}) source: http://search.cpan.org//CPAN/authors/id/D/DL/DLUX/Parallel-ForkManager-0.7.5.tar.gz %description This module is intended for use in operations that can be done in parallel where the number of processes to be forked off should be limited. Typical use is a downloader which will be retrieving hundreds/thousands of files. The code for a downloader would look something like this: use LWP::Simple; use Parallel::ForkManager; ... @links=( ["http://www.foo.bar/rulez.data","rulez_data.txt"], ["http://new.host/more_data.doc","more_data.doc"], ... ); ... # Max 30 processes for parallel download my $pm = new Parallel::ForkManager(30); foreach my $linkarray (@links) { $pm->start and next; # do the fork my ($link,$fn) = @$linkarray; warn "Cannot get $fn from $link" if getstore($link,$fn) != RC_OK; $pm->finish; # do the exit in the child process } $pm->wait_all_children; First you need to instantiate the ForkManager with the "new" constructor. You must specify the maximum number of processes to be created. If you specify 0, then NO fork will be done; this is good for debugging purposes. Next, use $pm->start to do the fork. $pm returns 0 for the child process, and child pid for the parent process (see also the perlfunc(1p)/fork() manpage). The "and next" skips the internal loop in the parent process. NOTE: $pm->start dies if the fork fails. $pm->finish terminates the child process (assuming a fork was done in the "start"). NOTE: You cannot use $pm->start if you are already in the child process. If you want to manage another set of subprocesses in the child process, you must instantiate another Parallel::ForkManager object! # # This package was generated automatically with the cpan2rpm # utility. To get this software or for more information # please visit: http://perl.arix.com/ # %prep %setup -q -n %{pkgname}-%{version} chmod -R u+w %{_builddir}/%{pkgname}-%{version} %build grep -rsl '^#!.*perl' . | grep -v '.bak$' |xargs --no-run-if-empty \ %__perl -MExtUtils::MakeMaker -e 'MY->fixin(@ARGV)' CFLAGS="$RPM_OPT_FLAGS" %{__perl} Makefile.PL `%{__perl} -MExtUtils::MakeMaker -e ' print qq|PREFIX=%{buildroot}%{_prefix}| if \$ExtUtils::MakeMaker::VERSION =~ /5\.9[1-6]|6\.0[0-5]/ '` %{__make} %if %maketest %{__make} test %endif %install [ "%{buildroot}" != "/" ] && rm -rf %{buildroot} %{makeinstall} `%{__perl} -MExtUtils::MakeMaker -e ' print \$ExtUtils::MakeMaker::VERSION <= 6.05 ? qq|PREFIX=%{buildroot}%{_prefix}| : qq|DESTDIR=%{buildroot}| '` cmd=/usr/share/spec-helper/compress_files [ -x $cmd ] || cmd=/usr/lib/rpm/brp-compress [ -x $cmd ] && $cmd # SuSE Linux if [ -e /etc/SuSE-release -o -e /etc/UnitedLinux-release ] then %{__mkdir_p} %{buildroot}/var/adm/perl-modules %{__cat} `find %{buildroot} -name "perllocal.pod"` \ | %{__sed} -e s+%{buildroot}++g \ > %{buildroot}/var/adm/perl-modules/%{name} fi # remove special files find %{buildroot} -name "perllocal.pod" \ -o -name ".packlist" \ -o -name "*.bs" \ |xargs -i rm -f {} # no empty directories find %{buildroot}%{_prefix} \ -type d -depth \ -exec rmdir {} \; 2>/dev/null %{__perl} -MFile::Find -le ' find({ wanted => \&wanted, no_chdir => 1}, "%{buildroot}"); print "%doc TODO ForkManager Changes"; for my $x (sort @dirs, @files) { push @ret, $x unless indirs($x); } print join "\n", sort @ret; sub wanted { return if /auto$/; local $_ = $File::Find::name; my $f = $_; s|^\Q%{buildroot}\E||; return unless length; return $files[@files] = $_ if -f $f; $d = $_; /\Q$d\E/ && return for reverse sort @INC; $d =~ /\Q$_\E/ && return for qw|/etc %_prefix/man %_prefix/bin %_prefix/share|; $dirs[@dirs] = $_; } sub indirs { my $x = shift; $x =~ /^\Q$_\E\// && $x ne $_ && return 1 for @dirs; } ' > %filelist [ -z %filelist ] && { echo "ERROR: empty %files listing" exit -1 } %clean [ "%{buildroot}" != "/" ] && rm -rf %{buildroot} %files -f %filelist %defattr(-,root,root) %changelog * Mon Oct 12 2009 rpm@janus.arix.com - Initial build.